TDS Meter, Professional-Grade Water Test Kit Tests Water Quality in Drinking Water, General Hydroponics, Aquariums, Ponds, Pool, Spa, Water Purifier, 100% Accurate 3 in 1 TDS, EC and Temperature Meter Provides accurate and reliable test readings; 3-In-1 Digital TDS meter provides accurate readings for TDS (Total Dissolved Solids) EC (Electrical Conductivity) and temperature. Saves you money while protecting your health; Home water test kit alerts you when its time to change filters to remove contaminants from your water Locks your reading making it easy to record; Large, easy to read LCD screen and data-hold function makes reading and recording a snap Long battery life and lower power consumption; Auto-off function saves on battery usage and our TDS meter has lower power consumption than HM TDS meter Measurement range; Accuracy:  2%. Range:0-5000ppm, 0-9990 s/cm, 0.1- 80.0C, 32.0-176.0F.; Factory calibrated; Automatic Temperature Compensation (ATC)